Fluke Biomedical VT Plus HF - Manual (Page 32)

VT Plus HF
Operators Manual
2-4
Low Pressure (+ and -)
The low-pressure ports connect using standard luer fittings. Note that only the + side can
be used to measure fluid pressure.
W Caution
To avoid damage to the Analyzer or adverse affects on its
performance, follow these guidelines:
•
Pressures applied to either side of the low-pressure port
should not exceed ±500 mmHg.
•
Negative (-) side of the low-pressure port cannot be used to
measure fluid pressure.
Test System Setup
High- or low-flow ranges can be used for ventilator testing. One test setup is measuring
ventilator parameters using a test lung. Either a bi-directional flow mode, as shown in
Figure 2-1 or a unidirectional flow mode, as shown in Figures 2-2 and 2-3, below can be
chosen; however, the bi-directional mode is preferred.
Bi-directional Flow Mode
1. Connect the ventilator, using a Y-piece adapter, to the flow inlet port on the right of
the Analyzer.
2. Connect the flow exhaust port on the left to the test lung using standard breathing
hoses.
O u tlet Inlet
V entilator
Inspiratory Hose
Expiratory Hose
Analyzer
TEST
LU
N G
fec002.eps
Figure 2-1. Connecting the Analyzer in a Bi-Directional Flow Mode
3. Ensure that the breath detection mode is set to bi-directional.
a. Go into Setup .
b. Choose Settings
c. Choose Breath Detect and modify as needed